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通過Setters方式對日期屬性及日期格式進行IOC注入

 更新時間：2009年08月29日 00:38:41   作者：  
Spring不直接支持對Date類型的IOC依賴關系的注入,而提供了類似于Struts中的converte一樣的屬性編輯器，需要程序員自己寫相應的類,并將其注冊。
本實例中還涉及到Spring中采用多個配置文件,也涉及到對日期格式的注入-------更加靈活
Date屬性類： DatePropertyInjection.java
復制代碼 代碼如下:

package com.zhmg.spring;
import java.util.Date;
public class DatePropertyInjection {
private Date date;
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
}

屬性編輯器類：PropertyEditor.java
復制代碼 代碼如下:

package com.zhmg.spring;
import java.beans.PropertyEditorSupport;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* 自定義屬性編輯器處理java.util.Date類型的屬性
* @author Administrator
*
*/
public class PropertyEditor extends PropertyEditorSupport {
String format = "yyyy-MM-dd";
public void setFormat(String format) {
this.format = format;
}
@Override
public void setAsText(String arg0) throws IllegalArgumentException {
SimpleDateFormat dateFormat = new SimpleDateFormat(format);
try {
Date date = dateFormat.parse(arg0);
this.setValue(date);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

applicationContextBeans.xml
復制代碼 代碼如下:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
<bean id="dateProperty" class="com.zhmg.spring.DatePropertyInjection">
<property name="date">
<value>2009-8-28</value>
</property>
</bean>
</beans>

applicationContextBeans.xml
復制代碼 代碼如下:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
<!--
<bean id="dateProperty" class="com.zhmg.spring.DatePropertyInjection">
<property name="date">
<value>2009-8-28</value>
</property>
</bean>
-->
<bean id="editor" class="org.springframework.beans.factory.config.CustomEditorConfigurer">
<property name="customEditors">
<map>
<entry key="java.util.Date">
<bean class="com.zhmg.spring.PropertyEditor">
<!—對日期格式注入-->
<property name="format" value="yyyy-MM-dd"/>
</bean>
</entry>
</map>
</property>
</bean>
</beans>

測試單元：InjectionTest.java
復制代碼 代碼如下:

package com.zhmg.spring;
import junit.framework.TestCase;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class InjectionTest extends TestCase {
BeanFactory factory;
protected void setUp() throws Exception {
//采用通配符的方式讀取所有以applicationContext開頭的配置文件
factory = new ClassPathXmlApplicationContext("applicationContext*.xml");
}
public void testInjection(){
DatePropertyInjection dateProp = (DatePropertyInjection)factory.getBean("dateProperty");
System.out.println("date=" + dateProp.getDate());
}
}

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